Washing -Device for Headlights Mondeo

Hi. Since short time the washing-device for the headlights of my mondeo (built 11/99) starts to wash without anything doing of me. This means
when turning on the lights it washes in irregular periods. It should only wash when you push the washing button. Mechanics mean this malfunction could have several origins. Any help is appreciated. Heinz - Vienna
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.